Portable paving plant



June 22 1926. 1,589,814

0. c. MOSHER PORTABLE PAVING PLANT Filed Fb. 1924 4 Sheets-Sheet 1 i gwventov June 22 1926.

c. c. MOSHER PORTABLE PAVING PLANT Filed Feb, 7. 1924 4 Sheets-Sbeec 2 r 6 a m w June 22 1926.

C. C. MOSHER PORTABLE PAVING PLANT Filed Feb. 5, 1924 4 sheetswfimeet 5 6131 02 wag June 22 1926. 1,589,814

I C. C. MOSHER PORTABLE PAVING PLANT Filed Feb. 7. 1924 4 Sheets-Sheet 4 1 llylv Patented June 22, 1926.

UNETED CLIFFORD C. MOSHER, OF LIMA, OHIO.

PORTABLE PAVING PLANT.

Application filed February This invention relates to apparatus known as portable paving plants or portable asphalt plants, that is to say, to a combination of apparatus, carried by wheeled vehiclcs so as to be transpoi 'tabie from place to place, for pre iarine' and mixing paving and building materi 3, especially such as are composed of a mixture of earthy material, known as the mineral aggregate, and hereinafter called sand for convenience, and a bituminous substance, here nafter called asphalt. The present apparatus is a complete plant for this purpose, including boiler, steam melting asphalt kettles, etc. etc.

One of the main. objects of my invention islto provide a complete plant of this kind, which can relatively easily be plr cd in condition for use or in condition for shipment, which does not require the use of any apparatus, outside of or separate from itself, to make the change from operative position to shipping position, and which is compact, requiring only two vehicles for its transportation and use, and easy to operate.

The construction and arrangement of means by which I attain these objects will appear from the following detailed description, taken in connection with the accompanying drawings, in which,

Figures 1 and 2 are perspective views of the complete plant as it appears in working condition;

Figure. 3 is a similar view, on a smaller scale, showing the plant ready for shipment;

Figure 4 is a perspective view of the piping system;

Figure 5 is a front end view and partial section of the parts arried by the rear vehicle, and

Figure 6 is a cross section through the parts carried by the front vehicle.

In these views, 1 is the front ehicle or truck and 2 the rear vehicle or truck, both of which are adapted to be carried on a flat car 3, as shown in Fig.

The front vehicle 1 carries the steam melting asphalt kettle 1, the sand drier drum 5, the cold material feeding elevator 6, the hot material telescopic elevator 7, the oil burner 8, the fire-box 9 and its stack, and the asphalt pump 10.

The rear vehicle 2 carries the boiler 11, with its stack, and a carriage 13, running on inclined tracks 14: and carrying the hot sand bin 15, containing the rotary screen 16, the

7, 1924. Serial No. 691,134.

weigh-box 17, the asphalt weigh-box nd the bottom dump mixer 19.

'l 10 feeding elevator 6 and both the is are removable for shipment, and the riage 13 is run down on its tracks ll, while the telescoping elevator '4' lowered by the chain. hoist 2d, and the derrick 21, from which said hoist is suspended, folded down, all as shown in Figure 3.

The engine 22-, Figures 2 and i, is directly connected for running the bottom dump mixer 19, and an extended shaft of said mixer, through a chain 23, drives the rotary screen 16. 24 is the engine for rotating the drum 5 and driving the elevators G and 10, is the pump for delivering asphalt sand (. from the kettle to the asphalt weigh bucket 18 through steam-jacketed piping 2?. This pump is also used for agitating the asphalt in the kettle. The kettle is divided into two compartments by a partition see Fig. 6, and the pump can draw the asphalt from either compartment of the kettle or transfer it from one side of the partition to the other. The kettle contains steam coils 28 for melting the asphalt, supplied from the boiler 11 through piping 38, and has a semi-circular central bottom, under which is an insulating arch 30, forming the top of the drum lire-box 9, and protecting the bottom of the kettle from direct heat, said arch surrounding the drum 5, which contains lifting shelves 31, as usual. Either the firebox 9 is used for heating the drum externally, in which case the return draft is through the drum to the stack, or else the oil burner 8 is used to heat the drum internally.

The carriage 13 is moved up and down the tracks 14 by mechanical means such as the screws 33, driven by cranks 34;, and the hot sand bin 15, together with the weighbox 17 and the weigh bucket 18, can be raised and lowered vertically by the screws 35. The boiler 11 is shown as provided with a lire-box for solid fuel, but it may be. heated by oil burners, if desired.

In use, the parts assume the positions shown in Figs. 1 and 2, in which ample headroom is left between the vehicles for the passage of wagons or trucks under the mixer to receive loads of the mixed material and convey them to the. place of use. \Vhen not in use, the parts are compacted as shown in Fig. 3, in which condition they can be mounted on a flat car for shipment elsewhere.

1 have set forth in the appended claims those i'eatnres and combinations which I conceive to be novel and meriting of patent protection. I have avoided as far as possible going into detail description of mechanisms which are in themselves old and no part of the present invention, except in so far as they constitute elements of a new combination. Certain features of the invention as described are or may be of practical use in connection With other than portable plants, for instance, the arrangement of the drum in the kettle, but such arrangement is particularly desirable in a portable plant,- Whether it be constructed and adapted to be mounted on a flat car for shipment, or travel on the railroad by its oWn Wheels, so that it constitutes, I believe, properly a part of the present invention. Naturally, changes in the details of the various mechanisms can be made Without changing my invention,

the illustration being by Way of example only.

Having thus described my invention, what I claim is:

A portable paving plant, comprising two vehicles, sand-drying and asphalt nielting apparatus carried by one oi? said vehicles, batch measuring and mixing devices carried by the other vehicle, an inclined track on the latter, a carriage carrying said devices running on said track, and means on the first mentioned vehicle to deliver sand and asphalt to said devices when the carriage is at the top of said track, in which position headroom is provided between the vehicles and under said devices for the pas sage of Wagons to receive the mixed charge.

In testimony whereof I have hereunto set my hand.

CLIFFORD C. MOSI'I IGR. 

